Globigerinellidae

Original Description: The test is calcitic, macroperforate, biumbilicate, with a biconcave, thick-disc shape. Adult coiling is planispiral and adult chambers are subglobular or radially elongate. The surface is covered with spines or spine bases. The aperture is umbilical–extraumbilical throughout ontogeny.Extra details from original publication: Range: Miocene to Holocene.